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1; RUN: opt -S -mtriple=amdgcn-- -amdgpu-lower-module-lds --amdgpu-lower-module-lds-strategy=module < %s | FileCheck %s2; RUN: opt -S -mtriple=amdgcn-- -passes=amdgpu-lower-module-lds --amdgpu-lower-module-lds-strategy=module < %s | FileCheck %s3 4; Padding to meet alignment, so references to @var1 replaced with gep ptr, 0, 25; No i64 as addrspace(3) types with initializers are ignored. Likewise no addrspace(4).6; CHECK: %llvm.amdgcn.module.lds.t = type { float, [4 x i8], i32 }7 8; Variable removed by pass9; CHECK-NOT: @var010 11@var0 = addrspace(3) global float poison, align 812@var1 = addrspace(3) global i32 poison, align 813 14; The invalid use by the global is left unchanged15; CHECK: @var1 = addrspace(3) global i32 poison, align 816; CHECK: @ptr = addrspace(1) global ptr addrspace(3) @var1, align 417@ptr = addrspace(1) global ptr addrspace(3) @var1, align 418 19; A variable that is unchanged by pass20; CHECK: @with_init = addrspace(3) global i64 021@with_init = addrspace(3) global i64 022 23; Instance of new type, aligned to max of element alignment24; CHECK: @llvm.amdgcn.module.lds = internal addrspace(3) global %llvm.amdgcn.module.lds.t poison, align 825 26; Use in func rewritten to access struct at address zero27; CHECK-LABEL: @func()28; CHECK: %dec = atomicrmw fsub ptr addrspace(3) @llvm.amdgcn.module.lds, float 1.029; CHECK: %val0 = load i32, ptr addrspace(3) getelementptr inbounds (%llvm.amdgcn.module.lds.t, ptr addrspace(3) @llvm.amdgcn.module.lds, i32 0, i32 2), align 830; CHECK: %val1 = add i32 %val0, 431; CHECK: store i32 %val1, ptr addrspace(3) getelementptr inbounds (%llvm.amdgcn.module.lds.t, ptr addrspace(3) @llvm.amdgcn.module.lds, i32 0, i32 2), align 832; CHECK: %unused0 = atomicrmw add ptr addrspace(3) @with_init, i64 1 monotonic33define void @func() {34 %dec = atomicrmw fsub ptr addrspace(3) @var0, float 1.0 monotonic35 %val0 = load i32, ptr addrspace(3) @var1, align 436 %val1 = add i32 %val0, 437 store i32 %val1, ptr addrspace(3) @var1, align 438 %unused0 = atomicrmw add ptr addrspace(3) @with_init, i64 1 monotonic39 ret void40}41 42; This kernel calls a function that uses LDS so needs the block43; CHECK-LABEL: @kern_call() #044; CHECK: call void @llvm.donothing() [ "ExplicitUse"(ptr addrspace(3) @llvm.amdgcn.module.lds) ]45; CHECK: call void @func()46; CHECK: %dec = atomicrmw fsub ptr addrspace(3) @llvm.amdgcn.module.lds, float 2.000000e+00 monotonic, align 847define amdgpu_kernel void @kern_call() {48 call void @func()49 %dec = atomicrmw fsub ptr addrspace(3) @var0, float 2.0 monotonic50 ret void51}52 53; This kernel does alloc the LDS block as it makes no calls54; CHECK-LABEL: @kern_empty()55; CHECK-NOT: call void @llvm.donothing()56define spir_kernel void @kern_empty() {57 ret void58}59 60; Make sure we don't crash trying to insert code into a kernel61; declaration.62declare amdgpu_kernel void @kernel_declaration()63 64; CHECK: attributes #0 = { "amdgpu-lds-size"="12" }65